<file min_all.py> .... class min_all(SimpleItem.SimpleItem,ObjectManager): ... manage_options=(ObjectManager.manage_options + ({'label':'Edit Minimal', 'action':'manage_editMin_allForm'}, )) ...... def addFoo(self,id,dn): "add Foo object to min_all object" O=Foo(id,dn) self._setObject(id, O) self._p_changed=1 def delFoo(self,id): "del Foo object from min_all object" O=Foo(id,dn) self._delObject(id) self._p_changed=1 Function delFoo and addFoo working normally. For example, I can't add second Foo object with existing id, and I can't del Foo object with not existing id. But I can't see objects on ObjectManager.manage_options tab! I see only message: "There are currently no items in min_all1". I think, that problem is in _getOb function of ObjectManager class.... How can I change this function? And where can I read information about using ObjectManager class? Regards, Serg.